Cleaning-door and chimney-valve



i" W.1'.ICLARK. iCLEANlNG DOOR AND CHIMNEYl VALVE.

Patented Nov. 8, 1921.

2 SHEETS-SHEET 1.

. 3 WILBUR 'Z7 BLAH K W. T. CLARK.

CLEANING DOOR AND CHIMNEY VALVE.

APPLICATION FILED JULY 21.1920.

Patented Nov. 8, 1921.

2 sHEETs-sHEE`1r 2.

aww/nto@ 'VX/TLB UR 7T CLARK A hot blast stoves, and

`citizen of the United UNITED STATES `PATi- LNT ori-ica VNILBUR T.CLARK, OF CLEVELAND, OHIO, ASSIGNOB T0 THE HANNA FURNACE COMPANY, OF CLEVELAND, OHIO` A CORPORATION OF DELAWARE.

' y CLEANINGD0OR AND dHIMNEv-VALVE.

Application led July 21,

To .72 whom t may concern."

Be it known that I,` WiLUn CLARK, a States ot America, residing at Cleveland, i in' the.` countyl of Cuyahoga. and State of Ohio, have invented certain new and useful Improvements in Cleaning-Doors and Chimney-Valves, of which the following is a specitication.`

My invention relates to `improvements in combined cleaning door and chimney valve ota type especially designed for `use with has for its object the provision of a strong and etfective structure of this vclass which shall be very easily operated by hand and which will comprise a supported valve member that automatically will adjust itself to the valve seat.

` In addition access is afforded, at all times the valve is closed, tor inspection, while Vthe structure readily lends itself to replacement and repair.

Hot blast stoves, in the past,very commonly have utilized independent and more o1' less cumbersome means for cleaningr them and t'or operating the connections to the chimney stack. These prior means, moreover, have not afforded full and adequate facilities for inspection and ready repair. Again, the valve closure member of such necessarily large size frequently tails `to adjust itseli accurately to the valve seat unless special means are rovided therefor, while the actuation of suc massive members requires special mechanism therefor. Accordingly, I have endeavored to meet these practical requirements in a simple and etticient structure for equipping hot blast stoves and the like. i

My improvements, as herein embodied and illustrated, may be briefly described as comprising a massive casting adapted to be applied to and form the gas outlet for a hot blast stove. Associated therewith is a removable valve seat, a coacting valve member supported in a traveling shell so that it is capable of independent adjusting movement, and suitable actuating means adapted alternatively to torce' the valve member strongly against its seat, as by poweractuated gearing, or to close an external opening through which inspection other wisey is afforded upon its rearward engage'- ment by the supporting shell. These members also may be mounted upon a massive hinge support and yoke,whereby repair and Specification of Letters Patent.

blast `stove and y panying drawings, wherein:

Patented Nov. 8, 1921.

1920. serial No. 397,913.

cleaning operations are facilitated. These i improvements will be` described in detail asl preterably embodied for use with a hot as illustrated in the accom- Figure 1 is a vertical sectional, view of the combined cleaning door and chimney valve structure.

`l*`ig. Q is a top view of the same as equipped with actuating gearing for controlling the valve member.

s a front view. of the latter struc- Fig. 3 i ture` and\ l Fig. 4 is a section on line 4-4 of Fig. 3.

Throughout the several figures of the drawings I have employed the same character of reference to indicate similar parts.

Although the structure ot Fig. l differs from that of Figs. 2 and 3 in the simpler actuating mechanism, these figures may be referred to generally of the common structural features. Thus the massive casting shown in Figs. l and 2 is designed for attachment near the base of a lhot blast stove to `form its gas outlet and afford a frame for the valve structure. Securely bolted to this casting a is an annumember Z) forming the valve may readily be removed for relinishing. The two-part casing c, d likewise is bolted to the .trame a. partially to inclose said valve seat and its coacting valve member e, gether With the supporting shell f. The front opening of t is casing is partially closed by theanniilar shield g which is bolted thereto, while theducth to the chimney stack is coupled to the lowerportion of the casing, wherein the butterfly valve or damper z' is positioned.

A heavy supporting yoke is hinged at the right side of the casing whereon there is centrally mounted a hand wheel c and a gear wheel Z for actuating the tapped collar m rotatably within its bearing in the yoke. A massive screw member n bears terminally against the valve part e, extending through a central boss in the supporting shell or carrier j', wherein it is held against rotation` to its tapped actuating collar m. The valve part or closure e is `iieiiibly held in position within its shell by the loose bolts e', while it is supported edgewise upon the bottom flange ot the shell in position to be seated against the coacting valve seat.

fragmentary view in enlarged seat which for an understanding soV upon the lugs f,

The shell f, in turn, is supported upon two laterally positioned rollers f that ride as shown in the detail, Fig. 4.

The annular shield or front of the casing is secured to the yoke j, so that when the bolts and clips g', g, are removed, the composite device or member e, f, its actuating screw n and said shield g will swing back upon the hinge as soon as said yoke is freed by unscrewing the nuts 0 upon the bolts o, which extend to the rear of frame a. This permits the complete opening of the front of the casing, so that the stove may very readily be cleaned out through the gas outlet.

Although a single hand wheel 7c frequently is sufficient for actuating the valve member e, it is desirable when the structure is of extremely large size to provide a pinion p and secondary hand wheel p for actuating the gear wheel Z. This pinion may be slipped into and out of mesh with said gear wheel Z by moving the former longitudinally of its shaft p. Thus the extra power obtainable by the/gearing is readily availed of for actuating the valve member against its seat whenever necessary.

It will be observed that, as the valve member or closure c is afforded some freedom of movement within its shell by reason of the loose lit of the bolts c in the latter, as shown in Fig. 1, said valve member will very readily accommodate itself to the valve seat, against which it may be forced with the multiplied pressure exerted by the screw n and the associated gearing.

Having now described the preferred embodiment of my invention and its principal use and operation, I claim as new and desire to secure by Letters Patent the follow.- ing:

l. In a structure of the class described, the combination with valve seat, of a composite co-acting device comprising a supporting shell and an indeclosure g for the cess thereto, of a carrier,

a substantially vertical pendent closure member lfcarried thereby, and actuating mechanism for operating said device, substantially as set forth.

2. In a structure of the class described, the combination with the gas outlet of a stove or the like, of a valve seat therefor, a composite co-acting device comprising a. su pporting member and an independent closure part adapted to be forced against the valve seat and accommodate itself thereto, and screw-actuated means for operating said composite co-acting device, substantially as set forth.,

3. In a structure of the class described, the combination with a frame having a valve seat adapted to be associated with a stove, furnace or the vlike and afford lateral aca valve-closure flexibly mounted upon the carrier and thereby adapted to accommodate itself to the valve seat, and actuating means for operating said carrier and valve-closure, substantially as set forth.

4. In a structure of the class described, the combination with a frame having a valve seat adapted to be associated with a stove, furnace or the like and afford lateral conimunication to the interior thereof, of a carrier, a valve-closure flexibly supported by the carrier in position to accommodate itself to the valve seat, a support whereon said carrier travels, and actuating means for operating said carrier and valve-closure, substantially as set forth.

5. the combination with the gas outlet of a stove, furnace or the like, of a valve seat therefor, an associated valve-closure, a carrier therefor, means flexibly supporting thc valve-closure upon the carrier, a roller mounting for the carrier, and actuating means for operating said carrier and valveclosure, substantially as set forth.

In testimony whereof I do now allix my vWILBUR T. CLARKL signature.

In a structure of the class described,v 

